Barom etric altim eter in wireless com m unication network indoor positioning system  

作　　者：胡正群 张丽荣 

机构地区：[1]National Astronomical Observatories,Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences

出　　处：《Journal of Beijing Institute of Technology》2013年第3期380-386,共7页北京理工大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(61001109);the Pilot Program for the New and Interdisciplinary Subjects of the Chinese Academy of Sciences(KJCX2-EWJ01);the Knowledge Innovation Program of the Chinese Academy of Sciences(KGCX2-EW-4071)

摘　　要：A differential barometric altimetry technology based on the digital pressure sensors is put forward by using the existing mobile phone base station as reference. The height of known base sta- tion is precise. The pressure and temperature of the known base station is measured by sensors and transmitted to users. The absolute height value of user will be calculated by combining the baromet- ric pressure values and temperature values from the base station with the locally measured values. In order to decrease system errors caused by inconsistency between the measured pressure value at base station and the locally measured pressure value, weights correction is applied based on multiple reference stations. The calculated height value is accurate due to eliminating the measured errors caused by irregular changes of atmospheric pressure, with the error less than 1 m. Resolution of ele- vation positioning depends upon the resolution of the pressure sensor, the relationship between which is approximately linear. When the resolution of sensor is 0.01 hPa, the resolution of elevation positioning is about 0. 1 m. In addition, the data frame format at base station is designed in this arti- cle. Experimental results show that the method is accurate, reliable, stable and has the ability to distinguish floors and stair steps.A differential barometric altimetry technology based on the digital pressure sensors is put forward by using the existing mobile phone base station as reference. The height of known base sta- tion is precise. The pressure and temperature of the known base station is measured by sensors and transmitted to users. The absolute height value of user will be calculated by combining the baromet- ric pressure values and temperature values from the base station with the locally measured values. In order to decrease system errors caused by inconsistency between the measured pressure value at base station and the locally measured pressure value, weights correction is applied based on multiple reference stations. The calculated height value is accurate due to eliminating the measured errors caused by irregular changes of atmospheric pressure, with the error less than 1 m. Resolution of ele- vation positioning depends upon the resolution of the pressure sensor, the relationship between which is approximately linear. When the resolution of sensor is 0.01 hPa, the resolution of elevation positioning is about 0. 1 m. In addition, the data frame format at base station is designed in this arti- cle. Experimental results show that the method is accurate, reliable, stable and has the ability to distinguish floors and stair steps.

关 键 词：differential barometric altimetry wireless communication indoor positioning system micro-electro mechanical system （MEMS） MS5534C BP5607 

分 类 号：TN929.5[电子电信—通信与信息系统]